user1="五星"
user2="红旗"
password1="1949"
password2="2025"
user=input("请输入用户名:")
password=input("请输入密码:")
while user!=user1!=user2 or password!=password1!=password2:
    print("用户名或密码错误！")
    user = input("请输入用户名:")
    password =input("请输入密码:")
print("欢迎使用！")
input(),input()